Where might one find crime data at the census tract or block level? I am looking for data to join to an existing census tract or block shape file. I am looking for crime data in North Texas, specifically DFW (Dallas, Fortworth & Denton counties). I tried the usual places such as American Fact Finder 2 , but no luck.

Here is an example of what I am going for; however, it is for a county in San Antonio and I am not sure where the author found the data (no mention in metadata). [ATTACH=CONFIG]15061[/ATTACH]